Door construction



y 1953 -J. L. EVANS 2,836,268

DOOR CONSTRUCTION Filed Nov. 2, 1955 2 Sheets-Sheet 1 May 27, 1958 J. L.EVANS DOOR CONSTRUCTION Filed Nov. 2, 1953' 2 Sheets-Sheet 2 INVENTOR.Jesse L. Evans His Attorney noon CONSTRUCTION Application November 2,1953, Serial No. 389,741

2 Claims. (Cl. 189-46) This invention relates to a domestic applianceand more particularly to a door construction for domestic cabinets andranges.

It is an object of my invention to provide a simple inexpensive doubledoor arrangement and construction for cabinets and ranges which may bewell insulated and have sutficient rigidity and freedom from warping.

This and other objects are attained by providing double doors each madeof flanged rectangular sheet metal members with the flanges turnedtoward each other and nested together. The flanges are welded togetherat certain points but slightly spaced at other portions to minimize heattransfer between the members. The inner sheet metal member is providedwith an opening through which a suitable insulating material may beinserted. This opening is preferably covered by a sheet metal member orplate having the portion directly over the opening dished inwardlyslightly in the form of an X-shape. The outer edges of this coveringmember are provided with a configuration for holding a gasket seal forsealing the door opening.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings wherein a preferred form of the invention is clearly shown.

In the drawings:

Figure 1 is a front elevation of a double door type electric rangeembodying one form of my invention;

Figure 2 is an enlarged rear view of one of the doors shown in Figure 1;

Figure 3 is a sectional view taken along the line 33 of Figure 2;

Figure 4 is a sectional view taken along the line 4-4 of Figure 2;

Figure 5 is a sectional fragmentary sectional view taken along the line5-5 of Figure 2; and

Figure 6 is a sectional view taken along the line 66 of Figure 2.

Referring now to the drawings there is shown in Figure 1 a domesticelectric range provided with a top 20, a bottom 22 and the double doors24 and 26 which are hinged at their outer side edges to the cabinet. Thedoors are provided with matching door handles 97 and 99. Theconstruction of the door 26 is used as an example for both doors sincethey are similar except for being left and right hand. Referring nowmore particularly to Figures 2 to 6 there is provided an outer sheetmetal member 28 which is rectangular and has flanges 30 formed on allfour sides which are slightly rounded at the corners. Nesting in thisrectangular outer sheet metal member is an inner sheet metal member 32having flanges extending oppositely to the flanges of the member 28 andextending within the flanges 30 in a nested arrangement.

The flanges of the member 32 include the ten raised pads 34 which arelocated adjacent all four corners and the mid points of the two longsides which extend closely r *2 adjacent to the adjacent portions of theflange 30 and which, may be provided with welding projections.

' Through these welding projections the inner and outer members 28 and32 are welded together at these raised pads 34.' The remaining portions36 of the flange of the member 32 between the raised pads 34 arerecessed slightly to facilitate the nesting together of the members 32and 28 and minimize heat transfer by conduction between these members.

To make it possible to insert heat insulation into the space between themembers 28 and 32 the inner member 32 is provided with an inwardlyflanged opening 38 which is rectangular in shape. This makes it possibleto fill the door with any suitable form of insulation after the members28 and 32 are welded together. This opening 38 is covered by a sheetmetal cover 40 having a substantially central portion 42 dished slightlyinwardly in the form of an X impression. This dished portion stifiensthe cover 40 as well as the entire door and gives direction to theexpansion of the panel when heated. This insures that any buckling willbe directed toward the insulation space. The cover 40 is madeconsiderably larger than the opening 38 and is provided with a curledunder edge 42 extending completely around its perimeter for holding thegasket seal 44 of natural or synthetic rubber such as silicone. Thisgasket seal 44 has a D-shaped portion to which is connected aweb-portion 46 extending beneath the cover 49 and held by the flange 42.The cover 40 extends substantially to the central edge of the door 26 soas to hold the seal 44 in position to make sealing engagement with thecorresponding portion of the gasket of the door 24. This makes itpossible to omit any central mullion which might otherwise be requiredfor sealing purposes.

The cover 40 extends down far enough and up far enough to make sealingengagement with the upper and lower edges of the oven liner of the rangeand it also extends close enough to the outer edge of the door 26 tomake sealing engagement with the outer edge of the oven liner orcompartment wall. Thus the cover 40 not only closes the opening 38 butalso aids in stiifening the door and holds the'sealing gasket in properlocation. The cover 40 is held in place by suitable sheet metal screws48 which extend through apertures in the cover 40 and thread intosuitable apertures in the inner sheet metal member 32. If desired agasket 50 may be provided beneath the cover 40 around the flangedopening 38.

In accordance with the provisions of Rule 78a, reference is made to thefollowing prior filed appliactions: S. N. 325,248 filed December 11,1952; S. N. 348,257 filed April 13, 1953; S. N. 365,142 filed June 30,1953, now Patent No. 2,751,486, issued June 19, 1956; S. N. 376,718filed August 26, 1953.

While the form of embodiment of the invention as herein disclosedconstitutes a preferred form, it is to be understood that other formsmight be adopted as may come within the scope of the claims whichfollow.

What is claimed is as follows:

1. A door construction including two flanged generally rectangular sheetmetal members having their flanges extending toward each other andnesting together, one of said members having an aperture therein with anintegral flange surrounding the aperture, and a removable rectangularsheet metal cover extending over said aperture and being fastened tosaid one member, said cover having diagonal creases and having curlededges outside and overlapping the edges of said aperture in said onemember.

2. A door including two flanged metal members with their flanges turnedoppositely and nested together, a gasket extending as a rectangle withthree of its sides latented May .27, 1958 located on the inner face of'the door and the fourth side extending along an'edge portion of thedoor, one I of said members being provided with an opening thereinmarginal portions overlapping the exposed face of said member with theaperture and having ,one edge portion extending substantially to oneedge of the door, said rectangular'plate having curled edge portionscurled toward the inner face of the door for holding said three sides ofsaid gasket upon the inner face of the door and the fourth side of saidgasket upon the edge portion of said door, said gasket having a beadwithin saidcurled edge portions, and threaded fastening meansfor'pulling said plate towards the inner face of said door.

References Cited in the file of this patent UNITED STATES PATENTS V 7Antrim -j Mar. 24, 71931 a

